Problems from Spotify Challenge 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
All Just A Dream 2357 595 25% 0.05 440 340 77% 5.0
Cat Coat Colors 268 123 46% 0.00 110 100 91% 3.1
Imperial Measurement 2186 904 41% 0.00 828 765 92% 2.0
Peer Streaming 52 19 37% 0.04 17 12 71% 7.3
Playlist 376 49 13% 1.09 39 16 41% 9.3
Primary Register 1275 782 61% 0.00 708 653 92% 2.2
Square Pie 458 165 36% 0.07 49 39 80% 5.9
Wheel Game 134 18 13% 0.00 19 15 79% 6.7